Method of repairing torn fabric



March 15 1927.

. e. GALLOPIN METHOD OF REPAIRING T0 RN FABR I 0 Filed A112. 13, 1924INVENTOR' 6 A v a 5 f ATTORNEYS drawing reinstated without. pairing thetranslucency o f it may sat si'actorily be used fol-the purpose PatentedMar. 15, 1927. v

. mees'r ensrevo eALLorIN, or CHICAGO, rrimnorsnssmnon rowns'rn nnnLnornIc coir-- PANY, INCORPORATED, or' nnw yonx, 1\T.-Y.,v Acoaronn'rron or new YORK.

ivrnriron or REPAIRING roanraenrc.

Application filed August 13,. 1924. Serial are. "731,858..

This invention relates to a method of repairing torn fabric and,more.particularly,

to a method of rcpairing'tracing cloth upon which drawings, such. asfactory working drawings. are commonly made.

The invention also contemplates a novel element em ployed incarryijng'out: the method. 5 An object otthe invention is to providesuch a method whereby torn, mutilated or defaced material having adrawing: thereonmay be repaired and the injured part 'ot thesubstantially imthe sheet 50- that of obtaining prints therefrom. p

"Ainother object consists 111-. obtaining the first named object in avery simple and expeditious manner.

A further object consists in providing a novel repair element for thepurpose stated. A further ob ect consists in providing certainimprovements; in the material, construction and steps followedincarrying out. the

metho.d" whereby the above; named and other.

objects may effectively be attained.

A practical embodiment of the invention is represented inptheaccompanyingdrawinns, in which- Fig- 1 represents a: detail, practicallydiagrammati'c, view showing a portion of draw-' ing'fabric with aperformed as-a step in the method being represented in dot and dashvlines.

Fig. 2' represents a plan view of an inset employed in carrying out the.method;

Fig. 3 represents a view similar to Fig- 1 but showing the sheetrepaired; Fig. 4 represents an enlarged section taken inthe plane of the lineIV-IV of Fig. 3,

' running a; sharp edge around. tollowingffor in the plane or the lineVI-VI of Fig. 5,

looking in the direction of the arrows;

As is well I known, mechanical working drawings in general are commonlymade upon a form of brown paper and then traced onto oiled linen sheetswhich are used for a permanentrecord. From these linen sheets. blueprints are made from time to time for use by p ttern makers, machinists,et cetera.

These permanent tracings are a very valuable part of factory equipmentand it is imrequires tear therein; an operation portant to keep them ingood-condition[and fit for use in-making accurate prints for: themanufacturing operations: l t "frequently happens that the said: tracinns become torn, mutilated or defaced; and such injury quite frequentlytak-esthe term otan actual tearing out of a portion: o t-the tracingcloth. Such injury very frequently the retracing ot' the entire sheet(ante-anew sheet ottracing Clot-h! so that: facilities for producing,prints may be maini tained. This last step entails delay and subssta'ntizelexpense, and invention .is v de signed, to obviate the same. I

carrying out invention, a small piece of the: same-kind placedpunderthe. torn portion and a linecut around the torn portion so as to cutcompletely through the tracing; cloth containingthe drawing and theextra piece. The latter ot tracing cloth is s is their fitted inthe-opening in the tracing; I cloth drawing and secured in place byover- 4,. and it will be noted that it has eliminated parts of'thefigure 210i the design drawn thereon, in addition to: mutilating thesheet 1..

With atraeing cloth drawingin this; con-: dition. the operator jlaysasimilar piece-of tracing-cloth over the torn portion and cuts out themutilated part of the sheet 1. by.

example, the dot and; dash.- line '5. ,This up piece that exactly fitsthe. cut out portion of the tracing. I v j s This makes an inset. .whichis represented. in Fig. 2 and marked 6. This inset, it will beunderstood, is composed of the same ma terial as the sheet 1 and it isnow placed in the cut out portion in the, sheet 1 so as to eration also:cuts out a section from the extraby the saw tooth line clearly shown inFigs.

1, 2 and 3.

With the inset 6 in place in the sheet 1, the operator makes anapplication of some translucent adhesive, such, for example, ascollodion, to the back ofthe insert 6 and to the portions. of the backof the pressed into firm adherence with the sheet 1 and inset 6 bysuitable manual or mechanical pressure in any approved manner.

Finally, the operator re-draws, on the inset, the cut out portion of thedrawing.

The mutilated sheet and its torn design have now been completelyrepaired and the sheet is fit for permanent record and for use in theproduction'of prints therefrom,

it being clear that the translucent nature of the patch 7 andadhesive'will permit accurate and legible reproduction of the drawing onthe prints.

Instead of securing the inset in place, before redrawing the cut outpart of the drawing, the latter may be traced onto the inset before thecutting operation.

If desired, the patch 7 may have a coating of translucent glue appliedthereto, after the manner of an ordinary postage stamp, and it thenmaybe fixed to the inset 6 and sheet 1 by moistening the glue andapplying the patch in an obvious manner.

Such a-form of patch is represented in Figs. 5 and 6,'in which thefabric of the patch is represented by 8 and the glue coating thereon by9. Such a patching material might be manufactured in ribbons or tapeformation and dispensed in a roll or in any other suitable package, andin various widths. It is plain that, from such a roll or package, asuitable amount of the desired width'could be cut oil and applied to theinset 6 and sheet 1,1as' just explained. I

believe this form of repair material for this purpose to be novel, andit constitutes a feature of my invention. I

It will be understood that various changes may be resorted to in thematerial, form,

construction and steps followed without departing from the spirit andscope of my 111- vention, and hence, I do not intend to be limited tothe details herein ShOWVlI and be included in drawing and securing saidpiece in position by applying to the ba'ckof said piece and said sheeta'patch of translucent-fabric with the intermediation of translucentadhesive, thereby leaving the front of the repaired sheet as asubstantially smooth surface upon which may be redrawn cut out portionsof the drawing, v

2. A'method of repairing mutilated drawing sheets of translucentmaterial which includes the following steps: removing a portion of thesheetincluding the mutilated portion of the drawing, preparing a pieceof translucent material having an outline iden tical with that of theremoved portion of the drawing sheet, inserting the prepared piece oftranslucent material inplace of such removed portion, and securing saidpiece in position by'fixedly applying to the back of said piece and saidsheet a patch of translucent material to produce a substantiallyuniformly translucent sheet having a substantially smooth-front surfaceupon which may be redrawn cut out portions of the drawing.

In testimony, 'thatI claim the foregoing as my invention, I have signedmy name this 29th day of July, 192$. I

' GUSTAVO GALLOPIN.

